Syzygium rubicundum
Seed germination was highly staggered in absolute (Stacy, Harischandran, and Gunatilleke, within the force) and you may greenhouse configurations, extending over >4 mo. During the a hundred d immediately following planting (whenever germination is actually ?95% complete), brand new rates out-of seeds germinated have been reasonable, ranging round the treatments of 21 so you’re able to forty two% from sown seed (suggest = 36%; pooled across the maternal woods; Fig. 3a). Except for the fresh new unusually high germination rate seen into nearby-neighbor therapy at Forest number 3 (83.3%), the connection anywhere between crossing distance and you will vegetables germination is actually nearly similar to this for fresh fruit in for it kinds (Fig. 3a). Including all investigation situations, suggest seed germination wasn’t significantly different certainly service, neither one of maternal trees (Table 3A). Excluding the fresh unmarried outlier failed to alter the Aong give-pollination treatments, level indicate seed products germination coincided having level fruit put at the a keen outcrossing point of just one–2 kilometres and you will is almost https://datingranking.net/fr/rencontres-de-remise-en-forme/ just like the fresh new suggest germination regarding open-pollinated seed (Fig. 3a).
Shorea cordifolia
Germination of experimental seeds was rapid and fairly even across treatments (mean = 62%; range: 55–72% at 45 d; Fig. 3b). A steady increase in mean seed germination with outcrossing distance is apparent, but not significant (Fstep 1,nine = 1.02, P < 0.34, R 2 = 0.40; Fig. 3b). Mean seed germination was not significantly different among treatments, nor among maternal trees (Table 3B). Interestingly, mean seed germination for all hand-pollination treatments exceeded that of open-pollinated seeds (Fig. 3b). While the reason for this observation is not known, the latter estimates were based on much larger sample sizes and therefore may be more robust.
Seedling survivorship and growth
On account of attrition from existence stage to a higher, shot systems of some cures classes was reasonable to possess rates out-of seedling survivorship and you may gains, having hampered analytical screening. No high results of sometimes crossing treatment or maternal forest were receive getting either level either in types (Desk 3). Excluding selfed treatment seedlings out-of S. rubicundum (N = 2), the new indicate survivorship price regarding seedlings in their first 12 months was higher (>80%) for everyone solutions from each other species. Both for variety, peak mean seedling survivorship coincided for the faraway within-forest medication.
To possess S. rubicundum, imply seedling height on step one yr postgermination increased with outcrossing length, peaking within an intermate range of 1–dos kilometer, and you may losing a little on the longest point crosses (Fig. 4a). Getting Sh. cordifolia, imply seedling top enhanced continuously that have outcrossing point, peaking in the longest-point mix (Fig. 4b). For types, within-treatment adaptation during the seedling level try highest (Fig. 4). To possess S. rubicundum, type in the seedling top is going to be explained, no less than simply, from the staggered vegetables germination.
Collective exercise
For each species, the cumulative fitness of each treatment class was calculated as the standardized product of the four fitness measures (see Fig. 5). For both species, the distribution of cumulative fitness with respect to crossing distance was similar to that for fruit set (Fig. 5). For S. rubicundum, variation in cumulative fitness among treatments was highly significant (Table 3A); mean cumulative fitness of the distant within-forest treatment was 4–25 times the means for other hand-pollination treatments and twice that of open-pollinated flowers. The relationship between outcrossing distance and cumulative fitness was nearly significant (quadratic regression: Fdos,ten = 3.84, P = 0.056). Mean cumulative fitness (relative) was not significantly different between the distant between-forest treatment (mean = 0.07) and all within-forest outcrossed classes combined (mean = 0.24, Fstep 1,12 = 1.69, P = 0.219), due to the strong near-neighbor effect on cumulative fitness.
